.NET API Engineer – Cloud, CI/CD & Quality Testing

Jobtailor; Dublin; On-site; EUR 70,000 - 110,000; Full time

Job summary

Jobtailor is seeking a software engineer to design and implement features within a .NET microservices architecture. You will build and evolve RESTful APIs using ASP.NET, with a focus on reliability, security, and backward compatibility where required.

You will deliver changes through established CI/CD pipelines, write unit and integration tests, and maintain clean, well-structured code. The role emphasizes observability, code reviews, and active participation in technical discussions to raise

Qualifications

• Production-grade .NET/ASP.NET experience in microservices ecosystems.
• Experience building Web APIs using ASP.NET with RESTful design principles.
• Strong knowledge of SQL Server and data modelling concepts.
• Experience writing unit tests (xUnit/NUnit) and familiarity with integration testing approaches.
• Solid Git fundamentals and PR-based workflows.
• Exposure to CI/CD environments and automated build/deploy pipelines.
• Exposure to Azure or similar cloud platforms.
• Understanding of OAuth2 and OpenID Connect authentication/authorization.

Responsibilities

• Design and implement features within a microservices architecture using modern .NET.
• Build and evolve RESTful APIs with ASP.NET, ensuring reliability and security.
• Deliver changes via CI/CD pipelines with emphasis on quality and release safety.
• Write meaningful unit and integration tests to support maintainable code.
• Maintain clean, readable code and refactor for performance and clarity.
• Participate in peer code reviews and technical discussions to raise standards.
• Ensure observability in production through logging, metrics, and traceability.
• Diagnose and resolve defects using structured debugging approaches.
• Contribute to performance, reliability, and scalability considerations.
• Provide input during refinement and estimation, flagging risks early.
• Contribute to tooling and automation improvements.

Skills

C#

.NET

REST APIs

Unit testing

Git

CI/CD

Azure

OAuth2/OpenID Connect

SQL Server

Data modelling

Tools

xUnit

NUnit

Azure DevOps

Job description

Jobtailor is seeking a software engineer to design and implement features within a .NET microservices architecture. You will build and evolve RESTful APIs using ASP.NET, with a focus on reliability, security, and backward compatibility where required.

You will deliver changes through established CI/CD pipelines, write unit and integration tests, and maintain clean, well-structured code. The role emphasizes observability, code reviews, and active participation in technical discussions to raise